STAR Computing

 

Computing Requirements for 2003/2004

 

Maintenance



All numbers are rounded off to the highest value ...

Au+Au 200 Production Central

Min

Max

Expected Average

DAQ 100 (25%)

1 event

85sec

115sec

100 sec

75 sec

1 M event

24k CPU hour

32 k CPU hours

17 k CPU hours

13 k CPU hours

Full RCF farm (150 nodes, 2 slots)

80 CPU hours

100 CPU hour

90 CPU hour

67 CPU hours


3.3 days

4.4 days

3.75 days

2.8 days

Extrapolation to 100 Million

327 days

444 days

375 days

281 days

80% efficiency


555 days

470 days

352 days

1.2 passes



564 days

422 days



Au+Au 200 Minimum Bias

Min

Max

Expected Average

DAQ 100 (25%)

1 event

32 sec

50 sec

45 sec

34 days

1 M event

9 k CPU hour

14 k CPU hour

12 k CPU hour

9.5 k CPU hour

Full RCF farm (150 nodes, 2 slots)

30 CPU hour

46 CPU hour

42 CPU hour

32 CPU hours


1.3 days

2 days

1.8 days

1.4 days

Extrapolation to 100 Million

124 days

193 days

174 days

131 days

80% efficiency

155 days

242 days

217 days

164 days

1.2 passes



261 days

200 days



% get_file_list.pl -keys 'sum(events),grp(trgsetupname)' -cond collision=auau200,storage=HPSS,filetype=daq_reco_event,sanity=1 -limit 0
% get_file_list.pl -keys 'sum(size),grp(trgsetupname)' -cond collision=auau200,storage=HPSS,filetype=daq_reco_event,sanity=1 -limit 0


Trigger

Number of events

Number of files

File size (event.root)

File size (MuDst)

Size Reduction
event -> MuDst

Production Central

5947652 - 4820422

52095 - 64660

11025295929369
(~ 10 TB)

1965191677238
(~ 2 TB)

5.6

ProductionMinBias

6730183 - 4702240

37978 - 260363

5491914864037

338633519852

16.2

MinBiasVertex

4695384 - 2509288

32145 - 16215

2814369742750

423371157481

6.64


Note :



50 M central

175 M minbias

Total if requested

No DAQ100 processing time

282 days ~ 9 ½ month

456 days = 1 year and 3 months

738 days ~ 2 years

DAQ100 processing time

211 days ~ 7 month

350 days ~ 1 year

561 days ~ 1 ½ year

Total storage Size of event.root

105 TB

129 TB

234 TB

Total storage Size of MuDst.root

~ 18 TB

~ 18 TB (factor 7 used)

~ 36 TB

Number of files estimated (MuDst)

½ a million files

1 Million

1 ½ Million

Total estimation (data management)

2 ½ Million files

5 Million files

7 ½ Million



Current resources storage resources : ~ 21 TB of centralized storage, 18 TB of distributed disk.

Implies :